In order to better serve our academic community and concentrate on highly interest, special issues of any subjects in science or social science are welcome at any time. A special issue should be organized by accomplished experts in a given area and it should attract articles of the highest quality.

Proposals of special issue should include the following information:

1.A suggested title for the Special Issue

2.The journal for which the Special Issue is intended

3.Proposed Aims and Scope with an outline of the Special Issue's intended focus and a list of the topics to be covered

4.Names Guest Editors who are willing to manage the Special Issue with their emails, affiliations, and an one-paragraph biography of each of the Guest Editors

All proposals should be submitted to special.issues@scirp.org, and they are subject to approval by the journal editorial board.